I have enjoyed playing IJ on site in the day, and also at meets.

Never owned one, so couldn't tell you about long term appeal.

For the record. TZ was actually a poor earning machine on site despite the number of machines sold.

It really hit it's own with the home market, due to the deep rule set.

It's really one of those games where you need to spend a shit load of time with it to get to know it.  Addams is awesome because the average punter can walk up and get stuck into it straight away.  Plus it's deep enough for the seasoned player.